Wood-preserving composition.



ring so as to get a perfect mixture, keeping *Uhllilfhlo I tsdifjlts snpsn'r'osnics; A

Human STOKES,

s. Wsi'cuT, cs Pnimnsren rumours, cs BEVERLY, JERSEY.

OF BE ERLY, NEW JERSEY, A'SSIGNOR OF ONE-THIRD TO JONATHAN .A, PENNSYLVANIA, AN D ONE-THIRD, TO MITCHELL B.

WQUID-PRESERVING UOTIEPOSITIONL No. eases-s.

Epccification of Letters patent.

Patented Aug. s, 1908.-

fipplicaticn filed February- 17, 1908. {Serial Ila. 116,354.

wood or other material externally, or by soaking the same to secure high degree of saturation or penetration, a condition that will be accentuated by heatas Well as by the porosity of the material tr u,

The object of my invention to provide a material that will not only hi 1 any insect life or larvie present in t is wood or other fibrous material, but Will also afford such a coating and impregnation as to resist moisture and its deleterious effects; the attack of insects or marine animals, and all condi tions that would. tend to cause decay or other deterioration.

The improved compound forming the subjcct of-my invention. is composed of an excess of crude mineral oil, with which is associated animal fat such as lard, grease collectcd from animal refuse in thr manufacture of fertilizers, tallow, or Wool oil, together with oil from certain marine animals, and a salt of an alkaline carbonate, such sal soda (Na CO iilll O). Oi thcmat "alssonsmed, I prcfer'to use crude petroleum, lard, fish oil, and sal soda, and in making my improved preservative, I use these ingredients mined orcom bined' in substantis v the following proportions Mineral oil (crude petroleum) 74. parts Lard (melted) f Fish Oil 7.4 Sal soda (Na flfhlflll 'fil 3.55s.

These ingredients or their equivalents are inhcatin the fish oil to 100 F,

unti sal soda becomes entirely dissolved, then add and mix-Well the melted animal. fat, ially adding the petroleum slowly and stirthe entire solution Warm for at least two or three hours to dition.

The main ingredient, crude-oil, together with the laid and fish oil, or their equivalent form the body of the'compositionfland the sal soda or its equivalent is added to. keep the 1? sture pliable, being combined therewith, so that when applied to wood it will prevent that portion remaining on the surface from checking or cracking, as Well as on account ofits penetrating;properties, which it imparts to the Whole composition, enabling it to much more readily and pcrfectly'fill the pores and fibers of the Wood.

My improved preservative may be made in any suitable receptacle and preferably in the vessel in which'the Wood Ol.0th8l mate rial is to be treated such receptacle or vessel. being so arranged asto be susceptible of be ing heated to the degree necessary for-a homogencous combination of the several elc merits forming such composition. In naming the proportions which may be employed, I do not Wish to be limited to the exact figures given, as quantitics'may vary depending upon the specific use to which the compound is to be put andcharacter of the procure a homogeneous colianatcrial treatcd, as the ultimate desire is to coat or impregnate such Wood to such an extent that any cracks or porous spots not apparent to the eye shall be-thoroughly saturated or covered as to prevent absolutely the reception and retention of moisture; to kill all insects and lar present; to rcsist thc attack of insects chines-inc animals, and to prevent decay incident to continued exposure to the elements or due to contact with the ground.

An important point in connection with my improved material istl'ic method of ap plying the same for the preservation of Wood. Primarily speaking, it has been designed particularly for the purpose of treating railroad ties, although it can be used for treating Woodemployed for any purpose or Where it is subject to the. elements, t e ravages of insect life or marine animals, or to dampness incident to its position in the ground. In treating such wood railroad ties and the like, I pre are a. batllythis bath to contain the ingrc'icnts' noted, incorporated in the mannerdescribcd, that is to say, to have a temperature substantially at or about 200 FL; While it may be desirable to boil or nearly boil the ingredients in effecting the thorough ,incorporation of the same, it is not absolutely necessary to have the preservative in this condition when treating the wood and other material.

The wood should preferably be Well seasoned and substantially dry, having had its normal water contents dispelled by the aid of heat. It will be understood, of course, that the dryer the'wood, the easier the penetration of the preservative. Such wood is then placed in the heated bath and allowed to remain there for a period of about three hours;

After thefwood is removed from the bath itis permitted t dry, the preservative having soaked into the wood, so that the latter presents substantially its original appearance Should the preservative effect an undesirable discoloration of the-wood, color- 2 ing matter may be added to the preservative to offset such condition. This treatment of wood, when applied to railroad ties, has the effect of increasing the normal holding power ofspikes after being driven. I believe that itflwill prevent the spikes from Working up or'out of the ties.

To sawed timber, presenting a relatively.

smooth surface, the preservative may be applied'in the hot. condition with a brush; repeated applications of thesame being given thereto insteadof. soaking such Wood in a receptacle, such'for instance as that in which the solutions are mixed. This arrangement may be particularly desirable 111 cases Where the material to be treated. 1s of such a size as 'to prevent it soaking in the tank, or where it is desired to apply the preservative to a building under construction, or one already built. Under ordinary circumstances, however, I prefer to saturate the wood. to be treated in the manner described. Piles for marine work may be treated with this proservative, and it is Well adapted for coating shingles.

I claim:

1. The herein described composition of.

matter for the preservation of wood and other fibrous material consisting of a mix combined with 7 4 parts by volume of crude I mineral oil.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

HILYARD STOKES.

Witnesses:

MURRAY 0. BUYER, Jos. H. KLEIN. 

